WisyCom MCR54 Series User Manual page 11

MCR54 User Manual
audio expanding chipset emulation. ENR is emulating the Philips™ SA572 and PTT digital data of
Wisycom transmitters. Other setups can be loaded on request.
Edit RX: Sq. Mode
Squelch Mode is available in 3 possible configurations: Normal, Long Range or OFF.
Relevant setup are summarized in the following table:
RF squelch
[dBµV]
Normal 6
Long
3
Range
OFF OFF
NOTE: For expert users, there is an 4
single parameter using the Wisycom Manager.
RF squelch
[dBµV]
User OFF/0/3/6...
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RF Squelch
RF squelch is a function that acts to suppress the audio output of a receiver in the absence of a sufficiently
strong desired input signal.
Noise Squelch
Noise squelch is a more powerful tool than RF squelch because it actually looks at the quality of the signal from
the TX relative to the noise floor on the channel which can vary over time. With the noise squelch set to ON
you can set the RF squelch to a much lower level.
Tone Squelch
MCR54 is able to detect a digital tone squelch generated by a Wisycom transmitters (ex.
MTH410/MTH400/MTP40S/ MTP41S/MTB40S/RPU500).
Tone squelch ON: when the tone squelch is enabled the audio is muted unless the correct carrier is detected.
Tone squelch allows to work with lower RF squelch, increasing the coverage and the robustness especially in
presence of digital television carriers (DVB-T).
Edit RX: Audio Out
Max audio level output can be set:

from -24dBu to 18 dBu for analog output

from 0 to -30 dBFS step 1 for digital AES3 output
10
FIXED PARAMETERS
Noise Squelch ON
Squelch [dB] delay [ms]
11
8
0
th
configuration named User which allows to modify each
VARIABILE PARAMETERS
Squelch
Noise Squelch
ON delay
[dB]
[ms]
From 0 to 30 0 to 2000
Tone squelch
0 ON
0 OFF
0 OFF
Tone squelch
ON/OFF
TSQ delay
[ms]
500
500
500
TSQ delay
[ms]
0 to 2000